What other information do you need in order to prove the triangles congruent using the sas congruence postulate?

Option D.

Step-by-step explanation:

Given information:

Property of isosceles triangle : In a triangle, if two angles are congruent, then sides opposite those angles are congruent.

If , then .

Let as consider is given.

In triangle ABC and CDA

        (Given)

               (Given)

          (Property of isosceles triangle)

Two sides of a triangle and included angle are congruent to corresponding sides and included of another triangle.

          (By SAS)

Therefore, the correct option is D.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.